How to improve the method of affecting the color fastness of digital printed fabrics!
With the development of today's society, people's lives are constantly improving, and the pace of life is getting faster and faster. Taking the color fastness of textiles (referred to as color fastness) means that the dyed or printed fabric is subjected to external factors (squeeze, friction, water washing, rain, sun exposure, saliva immersion, etc.) during use or processing. The degree of fading is an important indicator of fabric. The color fastness is good, the textile is not easy to fade during the post-processing or use; if the color fastness is poor, there will be color loss, slight color, or staining, which causes a lot of trouble.
Products with poor color fastness will fade during the wearing process, which will affect other clothing worn on the body, or contaminate other clothes when washing with other clothes, affecting the appearance and performance. On the other hand, good color fastness and badness are directly related to the health and safety of the human body. Dye molecules and heavy metal ions on products with poor color fastness may be absorbed by the skin through the skin, which may harm the skin and even harm the health of the body.
The factors affecting the color fastness of textiles are divided into internal factors and external factors. Internal factors refer to the degree of firmness of the combination of dye and fiber. External factors refer to the external force or environmental conditions imposed by external factors during use. Because of external factors that cannot be controlled, producers must strive to improve the color fastness of the product itself.
The color fastness of a product is very important. If the dyeing material is not properly selected, there is no way to dye high quality color fastness in a good dyeing process.
First, the dye is selected according to the characteristics of the fiber.
Different types of dyes and fibers are combined in different forms, and the bonding bonds are also different in firmness.
Second, select the dye according to the color depth.
Try to use a dye with a color close to the desired color, look at the color fastness index of the selected dye itself, and finally, see if the saturation of the dye dye reaches the desired color depth.
Third, the dye uptake rate of the fiber.
When choosing a dye, consider the dye rate. Otherwise, there will be competition between the dyes, that is, one of the dyes will occupy the dyeing position of the fiber in advance, so that other dyes can only be dyed on the surface of the fiber, and cannot be evenly distributed. The fibers form a strong bond that is first destroyed in subsequent processes or daily use.